You can find 90% alcohol in your local drugstore. You may have to ask for it though, as a lot of places keep it behind the counter. Around here we have to ask as they will not usually put it on the shelves. ???? Also, FWIW, MEK (Methylethyl Ketone) is used as a solvent for epoxy. If you use MEK, use gloves as it is easily absorbed thru the skin.